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kaheart [24]
3 years ago
15

Please help me! if correct will mark brainliest

Mathematics
2 answers:
9966 [12]3 years ago
4 0
Yea what he said ^ 17.4
Wewaii [24]3 years ago
3 0

Answer:

17.5

Step-by-step explanation:

formula:

y=k(x)

direct variation^^^

y=7, x=2

substitute it in the formula

7=(k)2 or 7=2k

7/2 or 3.5= k, k is the constant

now substitute k to the problem

y=5k

y=5(3.5)

y=17.5

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When constructing an inscribed equilateral triangle, how many arcs will be drawn on the circle?
g100num [7]

Solution-

The answer is 3 because an equilateral triangle has 3 equal sides and therefore there are 3 equal angles.

Each equal angle contains an arc of equal length.

so the answer is 3  that is option A is correct.

3 0
3 years ago
Read 2 more answers
A scale on a map shows that 2 inches = 25 miles.
Tasya [4]
<span>2 inches = 25 miles
?,,,,,,,,,,,,,,,</span><span>60 miles
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60 x 2 / 25 = 4.8 inches

<span>1/4 = 0.25 inches

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answer

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7 0
3 years ago
A space telescope on a mountaintop is housed inside of a cylindrical building with a hemispheric dome. If the circumference of t
Vlad1618 [11]

Answer:

 185553.7\text{ feet}^3

Step-by-step explanation:

GIVEN: A space telescope on a mountaintop is housed inside of a cylindrical building with a hemispheric dome. If the circumference of the dome is 84\text{ feet}, and the total height of the building up to the top of the dome is 91\text{ feet}.

TO FIND: what is the approximate total volume of the building.

SOLUTION:

let the height of the mountaintop be h\text{ feet}

As the dome hemispherical.

circumference of a hemisphere =\frac{1}{2}\times2\pi\times radius

                                                    =\pi\times radius

                                                    \frac{22}{7}\times radius=84

                                                    radius=26.75\text{ feet}

total height of the building up to the top of the dome =\text{radius of hemisphere}+\text{height of mountaintop}

=26.75+h=91

h=64.25\text{ feet}

Volume of building =\text{volume of cylindrical mountaintop}+\text{volume of dome}

                                =\pi(radius)^2h+\frac{2}{3}\pi(radius)^3

as radius of mountain top is same as dome

putting values

                                =3.14(26.75)^264.75+\frac{2}{3}3.14(26.75)^3      

                               =145484.6+40069.1

                               185553.7\text{ feet}^3

Hence the total volume of the building is 185553.7\text{ feet}^3                                      

5 0
3 years ago
A group of 5 friends is out to diner. Each of the friends is going to order the dinner special, and they have a coupon for $10 o
Andreas93 [3]

Answer:

I believe the last one is correct

~if this is correct, plz mark brainliest thx!~

Step-by-step explanation:

6 0
3 years ago
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Lelu [443]

Answer:

Rational

Explanation:

9 is a Rational Number

5 0
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